Motor of washing equipment and washing equipment

Abstract

The invention discloses a washing equipment motor and washing equipment, the washing equipment motor comprises a rotor and a stator which sleeves the rotor and is coaxial with the rotor, the washing equipment motor also comprises a noise reduction assembly, the noise reduction assembly comprises a cylinder sleeve which sleeves between the stator and the rotor and extends from one end to the other end along the axial direction of the rotor, and the noise reduction assembly is used for isolating the rotor from the stator. When the rotor rotates, air in a gap between the rotor and the stator can be driven to flow to form airflow, and the airflow is influenced by concave-convex change of the inner peripheral side wall of the stator to generate vibration noise when flowing through the inner peripheral side wall of the stator, so that after the rotor and the stator are isolated by the cylinder sleeve arranged between the stator and the rotor, the airflow is blocked by the cylinder sleeve when the rotor rotates; according to the air compressor, air cannot flow to the inner circumferential side wall of the stator and only can flow in the gap between the cylinder sleeve and the rotor, air between the stator and the cylinder sleeve is isolated by the cylinder sleeve and cannot be driven by the rotor to form airflow, noise generated by airflow vibration is avoided, and the user experience is effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of electrical appliances, and in particular relates to a motor of a washing device and the washing device. Background Art

[0002] Washing equipment refers to equipment used to wash items to be washed, such as washing machines (including household washing machines and industrial washing machines), dishwashers, etc.

[0003] The current washing equipment generally uses a motor as a driving force. The motor used generally includes a stator and a rotor structure that are nested with each other. Among them, a plurality of winding grooves are arranged on the inner peripheral side wall of the stator.

[0004] When the motor is working, the rotor rotates around its central axis, driving the air between the stator and the rotor to flow. Because each winding slot extends along the stator axis, the flow direction of the airflow is perpendicular to the extension direction of the winding slot. When the airflow flows through the winding slot, it will produce obvious noise. When the rotor speed increases, the noise will also increase significantly, especially when the rotor speed increases to more than 10,000 rpm, this noise will be very obvious, and even produce a sharp "howling", which brings discomfort to people.

[0005] The traditional solution to the noise generated when air flows through the winding slot is to reduce the wind noise by changing the ratio of the voltage and frequency of the input motor or by changing the winding slot structure. However, because the voltage in the power grid is not completely stable, it will produce certain fluctuations, making it difficult to stabilize the ratio of voltage and frequency; affected by the manufacturing accuracy, there are also errors in the specifications of the winding slot during actual manufacturing. These factors all lead to high noise when the motor is working.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The invention provides a motor for washing equipment and the washing equipment, and aims to reduce the noise generated by airflow passing through winding grooves when the motor is working.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A motor for a washing device comprises a rotor and a stator which is sleeved outside the rotor and coaxially arranged with the rotor, and also comprises a noise reduction component, wherein the noise reduction component comprises a cylinder sleeve which is sleeved between the stator and the rotor and extends from one end to the other end along the axial direction of the rotor, and is used to isolate the rotor from the stator.

[0010] Further, the stator comprises a plurality of winding teeth uniformly distributed along the circumferential direction of the inner peripheral side wall of the stator, the winding teeth are convexly arranged on the surface of the inner peripheral side wall and are extended along the axial direction of the stator, the winding teeth comprise tooth tops away from the inner peripheral side wall of the stator, the outer peripheral side wall of the cylinder sleeve is arranged in abutment with the tooth tops, and the inner peripheral side wall of the cylinder sleeve is arranged at a distance from the rotor;

[0011] Preferably, the outer diameter of the cylinder sleeve is greater than the distance between the tooth tops of the oppositely arranged winding teeth.

[0012] Furthermore, a tooth groove extending along the axial direction of the cylinder sleeve and capable of being plugged with the winding teeth is provided on the outer peripheral side wall of the cylinder sleeve. After the cylinder sleeve is installed in the stator, the winding teeth are plugged with the tooth grooves of the stator.

[0013] Furthermore, winding slots with open ends are formed between adjacent winding teeth, the stator includes an axial end surface with an open winding slot, and the noise reduction component includes a cover plate arranged on the axial end surface and the inner surface of which covers the open winding slot.

[0014] Furthermore, the cover plate is annular with its center located on the central axis of the rotor, and its inner surface abuts against the side wall end face of the stator and the end face of the cylinder liner at the same time, and the stator side wall, the cylinder liner and the cover plate form a sealed space for sealing the winding slot;

[0015] Preferably, the cylinder sleeve and the cover plate are integrally arranged.

[0016] Furthermore, the outer surface of the cover plate is provided with a plurality of heat sinks protruding from the surface of the cover plate.

[0017] Furthermore, the heat sink and the cover plate are integrally arranged;

[0018] Alternatively, the heat sink and the cover plate are detachable.

[0019] Furthermore, the winding groove and the outer peripheral side wall of the cylinder sleeve form a cavity, and a filling structure for at least filling the opening is arranged in the cavity, and the outer surface of the filling structure is flush with the axial end face of the stator.

[0020] Furthermore, the rotor comprises rotor end surfaces arranged at both ends of the rotor, and the rotor end surfaces are provided with a plurality of heat dissipation columns which are evenly arranged along the circumference of the rotor end surfaces and protrude from the rotor end surfaces.

[0021] A washing device comprises any one of the washing device motors described above.

[0022] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0023] 1. A cylinder sleeve is set between the stator and the rotor to isolate the stator and the rotor, so that the airflow driven by the rotation of the rotor can be completely isolated by the cylinder sleeve and only contact the inner circumferential side wall of the cylinder sleeve, avoiding the airflow from vibrating and generating noise due to the unevenness of the winding groove and the winding teeth, thereby improving the user experience.

[0024] 2. The tooth top abutment setting of the cylinder sleeve and the winding teeth can limit the cylinder sleeve in the radial direction of the cylinder sleeve through the winding teeth, so as to avoid radial movement of the cylinder sleeve when the motor is working, and collision with the rotating rotor, affecting the normal rotation of the rotor, and further affecting the output power of the motor.

[0025] 3. Tooth grooves that can be plugged into the winding teeth are arranged on the outer peripheral side wall of the cylinder sleeve, which can limit the rotation of the cylinder sleeve in the circumferential direction and prevent the cylinder sleeve from generating noise due to rotation.

[0026] 4. A cover is set at the opening of the winding groove to block the opening, which can prevent the airflow driven by the rotor from entering the winding groove from the opening and generating noise. After the opening is blocked, the winding groove is completely closed, and the airflow cannot enter the winding groove, completely eliminating the noise generated by the vibration when the airflow passes through the winding groove.

[0027] 5. The cover plate is set in an annular shape, which can avoid the drive shaft extending outward from the rotor and avoid interference with the drive shaft. The inner edge of the annular cover plate abuts against the cylinder sleeve, and the cover plate, cylinder sleeve and the peripheral side wall of the stator together form a sealed space, which completely encloses the winding groove in it, so that the airflow therein is not connected with the outside world. When the rotor rotates, the winding groove cannot affect the airflow, effectively controlling the noise.

[0028] The cylinder liner and the cover plate are arranged integrally, which can simplify the assembly process of the noise reduction component, and the cylinder liner and at least one cover plate can be installed simultaneously in one operation.

[0029] 6. Setting heat sinks on the cover can increase the heat dissipation area of ​​the cover, speed up the heat dissipation of the cover, and then speed up the heat dissipation of the stator, avoiding power drop or motor damage due to excessive stator temperature.

[0030] 7. When the heat sink itself is made of a material with good thermal conductivity, a heat sink made of the same material and protruding from the surface of the cover plate can be directly set on the heat sink for heat dissipation; if the heat sink itself is made of a material with poor thermal conductivity, a heat sink with good thermal conductivity needs to be installed separately to improve the heat dissipation efficiency of the cover plate.

[0031] 8. A filling structure is provided in the cavity formed by the winding groove and the outer peripheral side wall of the cylinder sleeve to fill the cavity so that the axial end surface of the opening relative to the stator no longer has a depression, thereby avoiding noise generated after the airflow flows to this place.

[0032] 9. Setting heat dissipation columns on the rotor end face can effectively increase the heat dissipation area of ​​the rotor end face, make up for the problem of reduced heat dissipation capacity caused by the reduction of the rotor outer clearance after adding the cylinder liner, effectively control the rotor temperature, and avoid motor power reduction or motor damage caused by excessive rotor temperature.

[0033] 10. Using the motor of the present invention in a washing device can effectively reduce the noise of the washing device during high-speed washing and improve the user experience.

[0034] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0036] Figure 1 It is a structural schematic diagram of the motor of the washing equipment of the present invention;

[0037] Figure 2 is another structural schematic diagram of the motor of the washing device of the present invention;

[0038] Figure 3 It is a schematic diagram of the rotor structure of the motor of the washing equipment of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the motor slot wedge plate of the washing equipment of the present invention.

[0040] In the figure: 1. stator; 11. winding teeth; 111. tooth top; 112. tooth root; 12. winding groove; 13. fixing position; 14. housing fixing hole; 2. rotor; 21. rotor end face; 22. heat dissipation column; 23. drive shaft; 3. cylinder liner; 4. cover plate; 41. heat sink; 5. slot wedge plate; 51. slot wedge; 52. connecting plate.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The present invention proposes a Figures 1 to 4 The washing equipment motor and washing equipment shown, the washing equipment refers to equipment used to clean the objects to be washed, such as washing machines (including household washing machines and industrial washing machines), dishwashers, etc.

[0046] The motor can be applied to various electric devices, such as washing machines (including industrial washing machines) and the like.

[0047] The present invention proposes a Figures 1 to 4 The washing machine motor shown includes a stator 1 and a rotor 2 . The rotor 2 is coaxially arranged with the stator 1 and is nested inside the stator 1 . The stator 1 is in a cylindrical shape with open ends and is sleeved outside the rotor 2 .

[0048] A plurality of winding teeth 11 are convexly arranged on the inner peripheral side wall of the stator 1, and the winding teeth 11 are extended in the axial direction of the stator 1 and protrude from the inner peripheral side wall surface of the stator 1 toward the central axis of the stator 1. The plurality of winding teeth 11 are arranged at intervals along the circumferential direction of the inner peripheral side wall of the stator 1, and a winding groove 12 extending in the axial direction of the stator 1 is formed between two adjacent winding teeth 11, and both ends of the winding groove 12 are open. The winding groove 12 is used to install the motor wire group.

[0049] The winding tooth 11 includes a tooth root 112 connected to the inner peripheral side wall of the stator 1 and a tooth top 111 opposite to the tooth root 112 .

[0050] There is a gap between the outer peripheral side wall of the rotor 2 and the tooth top 111 of the winding tooth 11. After the motor winding group is installed, the winding groove 12 still has a gap, which cannot be flush with the tooth top 111, and the gap in the winding groove 12 is irregular.

[0051] When the motor is working, the rotor 2 rotates, driving the air in the gap between the rotor 2 and the stator 1 to flow and form an airflow. When the airflow flows through the winding groove 12, the protruding winding teeth 11 and the irregular gap between the winding groove 12 cause the air to vibrate and generate noise. When the speed of the rotor 2 increases, the noise will also increase.

[0052] As an embodiment of the present invention, Figure 1 As shown, the motor includes a noise reduction component, which includes a cylinder sleeve 3 arranged between the stator 1 and the rotor 2. The cylinder sleeve 3 is a cylindrical shape with both ends open, and is coaxially arranged with the rotor 2 and extends from one end to the other end along the axial direction of the rotor 2. The cylinder sleeve 3 is sleeved on the outside of the rotor 2, and the stator 1 is sleeved on the outside of the cylinder sleeve 3. The cylinder sleeve 3 isolates the stator 1 and the rotor 2 in the circumferential direction.

[0053] Specifically, the cylinder liner 3 isolates the winding slots 12 of the stator 1 from the rotor 2 .

[0054] The inner peripheral side wall of the cylinder liner 3 is smoothly arranged, and has no depressions or protrusions which may cause the airflow flowing through the inner peripheral side wall of the cylinder liner 3 to vibrate.

[0055] In this embodiment, a cylinder sleeve 3 is arranged between the stator 1 and the rotor 2 to isolate the stator 1 and the rotor 2. The airflow driven by the rotation of the rotor 2 is isolated by the cylinder sleeve 3 and can only contact the smooth inner circumferential side wall of the cylinder sleeve 3 without causing vibration. The air in the winding groove 12 is also isolated by the cylinder sleeve 3 and will not flow due to the disturbance caused by the rotation of the rotor 2, thereby eliminating the noise generated by air vibration when the rotor 2 rotates, thereby improving the user experience.

[0056] Although the cylinder liner 3 can isolate the stator 1 and the rotor 2 to prevent noise, because the rotor 2 is a high-speed rotating device, in order to avoid the cylinder liner 3 interfering with the rotation of the rotor 2 when the rotor 2 rotates at high speed, the position of the cylinder liner 3 needs to be set.

[0057] As an implementation method of this embodiment, Figure 1 As shown, the tooth top 111 of the winding tooth 11 is spaced apart from the rotor 2, the outer peripheral side wall of the cylinder sleeve 3 is abutted against the tooth top 111, and the inner peripheral side wall of the cylinder sleeve 3 is spaced apart from the rotor 2. The cylinder sleeve 3 can be made very thin.

[0058] Preferably, the cylinder liner 3 has a thickness of 1.2 mm.

[0059] In this embodiment, the cylinder sleeve 3 is arranged in contact with the tooth top 111 of the winding tooth 11, and the tooth top 111 can fix the cylinder sleeve 3 in the radial direction of the cylinder sleeve 3 to prevent the cylinder sleeve 3 from moving in the radial direction and colliding with the rotor 2, thereby improving the safety of the motor during operation.

[0060] Furthermore, the cylinder sleeve 3 and the winding teeth 11 are interference fit.

[0061] Specifically, the outer diameter of the cylinder sleeve 3 is greater than the distance between the tooth tops 111 of the winding teeth 11 that are arranged opposite to each other.

[0062] The cylinder sleeve 3 and the winding teeth 11 have an interference fit, so that the cylinder sleeve 3 can be fixed. Not only can the cylinder sleeve 3 not move in the radial direction of the stator 1, but also, due to the interference fit, the winding teeth 11 have a clamping effect on the cylinder sleeve 3, so that the cylinder sleeve 3 can be fixed in the axial direction, thereby preventing the cylinder sleeve 3 from sliding or even falling off in the axial direction during movement and operation, thereby enhancing the reliability of the motor.

[0063] Furthermore, the end surface of the tooth top 111 of the winding tooth 11 can be set to be an arc along the circumferential direction, and the curvature of the arc is the same as the curvature of the cylinder sleeve 3, which can just cooperate with the cylinder sleeve 3.

[0064] After the cylinder liner 3 is installed in the stator 1, the cylinder liner 3 and the tooth top 111 of the winding tooth 11 have an interference fit, and the tooth top 111 will exert a certain pressure on the cylinder liner 3. The cylinder liner 3 itself is relatively thin. If the contact between the tooth top 111 and the cylinder liner 3 is uneven, the cylinder liner 3 may be deformed. A bulge in the direction of the central axis of the cylinder liner 3 may appear on the inner side wall of the cylinder liner 3 at the stress point. This may cause the airflow to vibrate and increase noise when passing through the bulge. In severe cases, the cylinder liner 3 may come into contact with the rotor 2, thereby interfering with the rotation of the rotor 2.

[0065] The cylinder liner 3 isolates the rotor 2 from the winding slots 12 of the stator 1 in the circumferential direction. If it is necessary to completely isolate them, the cylinder liner 3 also needs to be set in the axial direction.

[0066] As another implementation of this embodiment, the axial length of the cylinder sleeve 3 is greater than or equal to the axial length of the rotor 2 and the stator 1 .

[0067] Furthermore, the axial length of the cylinder sleeve 3 is greater than or equal to the axial length of the rotor 2 and the winding teeth 11 .

[0068] The axial length of the rotor 2 does not refer to the length of the entire rotor 2 including the motor drive shaft 23, but refers to the length of the iron core that cooperates with the rotor 2 and the winding teeth 11 to generate driving force.

[0069] The iron core cooperates with the wire group on the winding teeth 11 to convert electrical energy into rotational mechanical energy.

[0070] Furthermore, the axial length of the cylinder sleeve 3 is greater than or equal to the axial length of one of the rotor 2 and the winding teeth 11 .

[0071] Furthermore, the axial length of the cylinder sleeve 3 is greater than or equal to the axial length of the winding teeth 11 .

[0072] The noise generated by the airflow when the rotor 2 rotates is mainly caused by the uneven inner circumferential side wall of the stator 1 when the airflow flows through the inner circumferential side wall of the stator 1, which causes the airflow to vibrate.

[0073] In this embodiment, the length of the cylinder sleeve 3 is based on the length of the winding teeth 11 on the stator 1. When the length of the cylinder sleeve 3 is equal to the length of the winding teeth 11, the cylinder sleeve 3 can just cover the winding grooves 12, so that the airflow cannot contact the winding grooves 12. It can effectively eliminate noise and control the length of the cylinder sleeve 3 as accurately as possible, avoiding the cylinder sleeve 3 being too long and wasting the raw materials of the cylinder sleeve 3.

[0074] As another embodiment of the present invention, a tooth groove extending along the axial direction of the cylinder liner 3 and capable of being plugged into the winding teeth 11 is opened on the outer peripheral side wall of the cylinder liner 3. After the cylinder liner 3 is installed in the stator 1, the winding teeth 11 are plugged into the tooth groove of the stator 1.

[0075] Furthermore, the width of the tooth groove is equivalent to the width of the winding tooth 11 .

[0076] Furthermore, the length of the tooth groove along the axial direction of the cylinder sleeve 3 may be the same as that of the winding teeth 11 , or may be smaller than the length of the winding teeth 11 .

[0077] In this embodiment, the motor can limit the circumferential movement of the cylinder sleeve 3 when the motor is working, so as to avoid the rotation of the cylinder sleeve 3 and generate noise.

[0078] The stator 1 includes an axial end face, and the winding slots 12 formed by adjacent winding teeth 11 have an opening on the axial end face of the stator 1. After the wire group is installed in the winding slots 12, there is still a gap at the opening. The airflow driven by the rotor 2 will also drive the air flow at the opening, and then interact with the gap at the opening to generate noise.

[0079] As another embodiment of the present invention, Figure 2 As shown, the noise reduction assembly further includes a cover plate 4 , which is disposed on the axial end surface of the stator 1 to cover the opening of the winding slot 12 .

[0080] Furthermore, the axial end surface of the stator 1 is a plane, and the cover plate 4 is a sheet-like structure with both sides being planes. The inner surface of the cover plate 4 fits the axial end surface of the stator 1 to cover the opening of the winding slot 12 on the axial end surface.

[0081] In this embodiment, the cover plate 4 blocks the opening of the winding groove 12 and isolates the gap at the opening from the rotor 2. When the rotor 2 rotates, the airflow driven by it cannot contact the gap at the opening, and no noise will be generated here, thereby ensuring the noise reduction effect of the motor.

[0082] like Figure 1 , Figure 3 As shown, the rotor 2 of a general motor includes a relatively long drive shaft 23, which is used to fix the rotor 2 and output the power of the motor. The length of the drive shaft 23 is greater than the length of the stator 1. Therefore, the cover plate 4 should be installed to avoid the drive shaft 23 of the rotor 2 to avoid blocking the drive shaft 23 of the rotor 2.

[0083] As an implementation method of this embodiment, Figure 2 As shown, the cover plate 4 is annular, and the drive shaft 23 of the rotor 2 extends out from a notch in the middle of the annular cover plate 4 .

[0084] Furthermore, the cover plate 4 is annular with its center located on the central axis of the rotor 2 , and its inner surface abuts against the side wall end surface of the stator 1 and the end surface of the cylinder sleeve 3 at the same time.

[0085] The outer edge of the inner surface of the cover plate 4 abuts against the side wall end surface of the stator 1 , and the side wall end surface is located outside the tooth root 112 of the winding tooth 11 .

[0086] The inner edge of the cover plate 4 abuts against the cylinder sleeve 3 , and the side wall of the stator 1 , the cylinder sleeve 3 and the cover plate 4 form a sealed space for sealing the winding groove 12 .

[0087] Furthermore, the axial end surface of the stator 1 is provided with a plurality of fixing positions 13, and the plurality of fixing positions 13 are evenly arranged along the circumference of the axial end surface of the stator 1. The outer edge of the inner surface of the annular cover plate 4 is connected to the stator 1 through the plurality of fixing positions 13.

[0088] The inner edge of the cover plate 4 abuts against the cylinder sleeve 3 .

[0089] Furthermore, the inner edge of the annular cover plate 4 abuts against the port of the cylinder sleeve 3 , that is, the axial length of the cylinder sleeve 3 is the same as the distance between the cover plates 4 on both sides of the stator 1 .

[0090] Furthermore, the end surface of the cylinder liner 3 abuts against the inner surface of the cover plate 4. After the cylinder liner 3 and the cover plate 4 are installed, the cover plate 4 can limit the cylinder liner 3 in the axial direction of the stator 1 to prevent the cylinder liner 3 from slipping out of the stator 1.

[0091] In the motor of this embodiment, the length of the cylinder sleeve 3 may be 65 mm.

[0092] In this embodiment, the noise reduction assembly including the cover plate 4 and the cylinder liner 3 forms a closed space with the inner peripheral side wall of the stator 1, and the winding groove 12 is completely enclosed in this space, so that the gap of the winding groove 12 is completely isolated from the airflow driven by the rotor 2. When the airflow flows, it will not contact the winding groove 12, thereby avoiding the noise when the airflow flows through the winding groove 12.

[0093] Generally speaking, one motor needs to be provided with a cylinder sleeve 3 and a cover plate 4 at each end. That is to say, one motor needs to be provided with two cover plates 4 and one cylinder sleeve 3. During installation, the cylinder sleeve 3 needs to be installed into the stator 1 first, and then the two cover plates 4 need to be installed on the stator 1, and a total of three installation operations are required.

[0094] As another embodiment of the present invention, the cylinder sleeve 3 is integrally provided with one of the cover plates 4 .

[0095] Specifically, the end surface of the cylinder sleeve 3 is integrally connected to the inner edge of the cover plate 4 .

[0096] In this embodiment, during installation, it is only necessary to first install the cylinder sleeve 3 connected with the cover plate 4 into the stator 1, and then install the remaining cover plate 4 to complete the installation. A total of only two installations are required, thus saving steps.

[0097] Furthermore, if Figure 1 , Figure 2 As shown, the plurality of fixing positions 13 are screw holes arranged on the end face of the axial end of the stator 1, there are 6 screw holes, which are evenly arranged along the circumferential direction, and the cover plate 4 has six corresponding screw holes, and the cover plate 4 is fixed to the stator 1 by screws or rivets.

[0098] Furthermore, the motor also includes a motor end housing connected to the end of the stator 1, the housing wraps the cover plate 4, and the axial end face of the stator 1 also includes a housing fixing hole 14 for fixing the motor end housing. The fixing position 13 is arranged to avoid the housing fixing hole 14 and is spaced a distance from the housing fixing hole 14 to ensure the strength of the fixing position 13 and the housing fixing hole 14.

[0099] After the cover plate 4 is used to seal the notch of the winding groove 12, the heat generated by the wire group in the winding groove 12 will be difficult to dissipate, causing the motor to overheat, reduce the power of the motor, or even damage it.

[0100] As an implementation method of this embodiment, Figure 2 As shown, the outer surface of the cover plate 4 is provided with a plurality of heat sinks 41 protruding from the surface of the cover plate 4 .

[0101] Furthermore, the heat sinks 41 are arranged in parallel.

[0102] In this embodiment, the heat sink 41 protrudes from the surface of the cover plate 4, increasing the heat dissipation area, so that the heat inside the stator 1 can be dissipated faster, and the wire group in the winding slot 12 is prevented from heating up too quickly.

[0103] As an implementation method of this embodiment, the heat sink 41 is integrally provided with the cover plate 4 and is vertically provided with the cover plate 4;

[0104] Alternatively, the heat sink 41 is made of a material with good heat conductivity and is detachably mounted on the heat sink 41 .

[0105] In this embodiment, when the cover plate 4 is made of a material with good thermal conductivity, the heat sink 41 can be integrally formed with the cover plate 4 to play a heat dissipation role. When the cover plate 4 is made of a material with poor thermal conductivity, the heat sink 41 can be made separately using a material with good thermal conductivity to improve the heat dissipation capacity.

[0106] As another embodiment of the present invention, the winding groove 12 and the outer peripheral side wall of the cylinder sleeve 3 form a cavity, and a filling structure for at least filling the opening is arranged in the cavity, and the outer surface of the filling structure is flush with the axial end face of the stator 1.

[0107] The filling structure can be made of a plastic material, for example, silica gel mud.

[0108] After filling, the filling structure fills the opening and the surface is flush with the axial end surface of the stator 1, with neither protrusions nor depressions.

[0109] Furthermore, the interior of the cavity may be completely filled or may not be completely filled, which can be selected according to needs.

[0110] In this embodiment, the filling structure is used to fill the cavity, which can avoid noise generated when airflow flows through the cavity. The filling structure can be flexibly applied to motors of different sizes, making it more flexible and convenient to use.

[0111] After the noise reduction component is provided, the gap between the rotor 2 and the stator 1 is reduced, and it becomes difficult for the rotor 2 to dissipate heat itself, causing the temperature to rise too quickly, resulting in power reduction or damage.

[0112] As another embodiment of the present invention, Figures 1 to 3 As shown, the rotor 2 includes rotor end surfaces 21 located at two axial ends of the rotor 2 , and the rotor end surfaces 21 are provided with a plurality of heat dissipation columns 22 that are evenly arranged along the circumference of the rotor end surfaces 21 and protrude from the end surfaces.

[0113] The rotor 2 includes a rotor core and a drive shaft 23 fixedly connected to the rotor core. The end surface where the rotor core is connected to the drive shaft 23 is a rotor end surface 21. The rotor end surface 21 is located inside the motor end housing.

[0114] The heat dissipation column 22 is a columnar protrusion disposed on the rotor end surface 21 , and the columnar protrusion extends along the axial direction of the rotor 2 toward the motor end housing.

[0115] Preferably, there are ten heat dissipation columns 22 .

[0116] The plurality of heat dissipation columns 22 are evenly spaced and distributed along the circumferential direction of the rotor end surface 21 , and each heat dissipation column 22 has the same volume.

[0117] In this embodiment, heat dissipation columns 22 are arranged on the rotor end surface 21, which can increase the heat dissipation area of ​​the rotor 2, accelerate heat dissipation, and prevent the rotor 2 from rising too quickly. At the same time, the heat dissipation columns 22 are evenly arranged along the circumference, which can prevent the rotor 2 from vibrating due to imbalance of the center of gravity when the rotor 2 rotates.

[0118] As another embodiment of the present invention, the cylinder liner 3 is provided with a plurality of positioning devices, which are slot wedge structures provided on the outer peripheral side wall of the cylinder liner 3 and extending along the axial direction of the cylinder liner 3. The plurality of slot wedge structures are evenly distributed along the circumferential direction of the cylinder liner 3 and are plugged in with the winding slots 12 on the stator 1.

[0119] The cylinder liner 3 is inserted into the stator 1 along the axial direction, and the slot wedge structure on the cylinder liner 3 is inserted into the winding slot 12 of the stator 1 to fix the cylinder liner 3 in the circumferential direction.

[0120] The slot wedge structure is a structure protruding from the outer peripheral side wall of the cylinder sleeve 3, which can be inserted into the winding slot 12 and extends axially along the cylinder sleeve 3. The slot wedge structure is inserted into the winding slot 12 along the axial direction of the stator 1, and cannot be inserted in the radial direction.

[0121] The number of the slot wedge structure can be at least one, and at most the same as the number of winding slots 12 of the stator 1. Its length can be the same as the length of the winding slot 12, or it can be smaller than the length of the winding slot 12, as long as it can fit tightly with the winding slot 12 in the circumferential direction to prevent the cylinder liner 3 from rotating in the circumferential direction.

[0122] As another embodiment of the present invention, the width of the winding slots 12 of the stator 1 shrinks from the inner peripheral side wall of the stator 1 toward the central axis.

[0123] like Figure 4 As shown, the noise reduction component includes a slot wedge plate 5, the slot wedge plate 5 includes at least two slot wedges 51 and a connecting plate 52, one end of the slot wedge 51 is connected to the connecting plate 52. The connecting plate 52 has an arc, and the cross-sectional shape of the slot wedge 51 perpendicular to the extension direction shrinks from one end to the other end. Its shrinkage amplitude is the same as the shrinkage amplitude of the winding slot 12 near the tooth top 111.

[0124] Furthermore, the slot wedge plate 5 can be inserted into the winding slot 12 along the axial direction of the stator 1, so that the tooth top 111 end of the winding slot 12 is completely blocked by the slot wedge plate 5. The length of the slot wedge 51 is half of the slot wedge plate 5, and two slot wedge plates 5 with mirror-image structures are inserted into the same winding slot 12 from both ends of the stator 1 in the axial direction to completely block the winding slot 12.

[0125] Furthermore, the slot wedge plates 5 on the opposite sides may also be inserted crosswise to each other.

[0126] Furthermore, all the winding slots 12 of the stator 1 are blocked by a plurality of slot wedge plates 5 .

[0127] In this embodiment, the winding slot 12 of the stator 1 is blocked by a slot wedge plate 5 so that the airflow driven by the rotation of the rotor 2 will not enter the uneven winding slot 12, thereby avoiding the noise generated by the vibration of the airflow and improving the user experience.

[0128] After testing, when the noise reduction component of the present invention is not used, the noise of the motor reaches 68.42 decibels when the speed reaches 7000 rpm. After using the noise reduction component of the present invention, the noise drops to 57.47 decibels, and the effect is very obvious.

[0129] The motor of the present invention can be applied to multiple fields. For example, it can be used in household washing machines or industrial washing machines. It can significantly reduce the noise of the motor when the washing machine is working and significantly improve the user experience.

[0130] The present invention also provides a washing device, which refers to a device used to wash objects to be washed, such as a washing machine (including a household washing machine and an industrial washing machine), a dishwasher, etc.

[0131] The washing device comprises the motor of the present invention.

[0132] The washing device of the present invention can effectively reduce noise during washing, especially during dehydration and other processes requiring high-speed rotation of the motor, and can significantly reduce noise, thus providing users with a better use experience.

[0133] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A motor for a washing device, comprising a rotor and a stator sleeved outside the rotor and coaxially arranged with the rotor, characterized in that: It also includes a noise reduction component, which includes a cylinder sleeve that is sleeved between the stator and the rotor and extends from one end to the other end along the axial direction of the rotor, and is used to isolate the rotor from the stator.

2. The motor of a washing device according to claim 1, characterized in that: The stator comprises a plurality of winding teeth uniformly distributed along the circumferential direction of the inner peripheral side wall of the stator, the winding teeth are convexly arranged on the surface of the inner peripheral side wall and are extended along the axial direction of the stator, the winding teeth comprise tooth tops away from the inner peripheral side wall of the stator, the outer peripheral side wall of the cylinder sleeve is arranged in contact with the tooth tops, and the inner peripheral side wall of the cylinder sleeve is arranged at a distance from the rotor; Preferably, the outer diameter of the cylinder sleeve is greater than the distance between the tooth tops of the oppositely arranged winding teeth.

3. The motor of a washing device according to claim 2, characterized in that: The outer peripheral side wall of the cylinder sleeve is provided with tooth grooves extending along the axial direction of the cylinder sleeve and capable of being plugged with the winding teeth. After the cylinder sleeve is installed in the stator, the winding teeth are plugged with the tooth grooves of the stator.

4. A motor for washing equipment according to claim 2 or 3, characterized in that: Winding slots with open ends are formed between adjacent winding teeth, the stator includes an axial end surface with an open winding slot, and the noise reduction component includes a cover plate arranged on the axial end surface and the inner surface of which covers the open winding slot.

5. The motor of a washing device according to claim 4, characterized in that: The cover plate is annular with its center located on the central axis of the rotor, and its inner surface abuts against the side wall end face of the stator and the end face of the cylinder sleeve at the same time, and the stator side wall, the cylinder sleeve and the cover plate form a sealed space for sealing the winding slot; Preferably, the cylinder sleeve and the cover plate are integrally arranged.

6. The motor of a washing device according to claim 4, characterized in that: The outer surface of the cover plate is provided with a plurality of heat sinks protruding from the surface of the cover plate.

7. The motor of a washing device according to claim 6, characterized in that: The heat sink and the cover plate are integrally arranged; Alternatively, the heat sink and the cover plate are detachable.

8. The motor of a washing device according to claim 4, characterized in that: The winding groove and the outer peripheral side wall of the cylinder sleeve form a cavity, and a filling structure for at least filling the opening is arranged in the cavity, and the outer surface of the filling structure is flush with the axial end surface of the stator.

9. A motor for washing equipment according to any one of claims 1 to 3, characterized in that: The rotor comprises rotor end surfaces arranged at both ends of the rotor, and the rotor end surfaces are provided with a plurality of heat dissipation columns which are evenly arranged along the circumference of the rotor end surfaces and protrude from the rotor end surfaces.

10. A washing device, characterized in that: A washing equipment motor comprising any one of claims 1-9.

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